Seiko Cal. 5256 - 634

The Seiko 5256-634 represents an important milestone in Seiko's 1979 lineup. Powered by the 5256 caliber with 19j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-520296c16e03]

Also known as: Golden Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Cream

Jewels

19j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1979

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